In 2010, Kase played a yakuza mobster[5] in Takeshi Kitano’s highly anticipated return to the crime genre Outrage (アウトレイジ, Autoreiji) which competed for the Palme d'Or at the 2010 Cannes Film Festival.
In the film, Kase portrayed the historical figure, Oda Nobunaga, a charismatic military leader revered and feared as a demon king in Japan.
Some audience members felt that the character setting demeaned the historical figure, while others believed the acting was so realistic it seemed to overwrite the actual image of Nobunaga himself.
His first American film was Letters from Iwo Jima (2006) directed by Clint Eastwood, where he delicately portrayed a complex character of a former military policeman turned young soldier.
In the film Minamata, inspired by a photo collection of Japan's pollution lawsuit taken by the late photographer Eugene Smith,[11] he co-starred with Johnny Depp and Hiroyuki Sanada.